function addUploadFields(id,amount,clas){if(!id){id='uploadfilebox';}
var el=$(id);var span=el.getElementsByTagName('span')[0];if('none'==span.style.display){span.style.display='inline';}else{var newBox=span.cloneNode(true);newBox.getElementsByTagName('input')[0].value='';el.appendChild(newBox);var divs=document.getElementsByTagName('input');var skaicius=0
for(var no=0;no<divs.length;no++){if(divs[no].className==clas){skaicius++;}}
if(skaicius>=amount)document.getElementById("upload_"+clas).setAttribute('disabled',true);}}
function removeUploadField(element,id,clas,amount){if(!id){id='uploadfilebox';}
var el=$(id);var span=el.getElementsByTagName('span');if(1==span.length){}else{var divs=document.getElementsByTagName('input');var skaicius=0
for(var no=0;no<divs.length;no++){if(divs[no].className==clas){skaicius++;}}
el.removeChild(element.parentNode);if(skaicius<=amount)document.getElementById("upload_"+clas).removeAttribute('disabled');}}